While I may not have “been there” emotionally, and I do not dismiss the fears of someone who has, we are clearly called to a certain form of life in Christ and this is not part of it. This is vindictive when you read the entireity of her posts and get the overall picture. She is looking for him to mess up.
Now, I say the next part with a risk of making someone think I’m suggesting he’s not doing wrong. Please read what I am writing, not what you want to read.
The risk of social disease is rather insiginificant if - and this is the big “if”, isn’t it - he is still getting lap dances. If a lap dance entails him being fully clothed, I don’t see how the disk is much higher than using a public restroom. Yes, there is the possibility, but remote. This is not sexual activity, it is my understanding that he must not touch the girls in any way. It is still significantly wrong, don’t get me wrong.
The risk of VD is not worth either the damage to her own soul for the lying she is doing to her husband (lying by omission) or her marriage if he is not going to strip clubs and he finds out what she is doing.
Remember, he claims to refrain now. If she needs to check, then she can check other was: track money, call him on his cell phone, look for evidence. These are not direct assaults against him like the GPS is.
She posed the original question, my answer has been “no” the entire time. This is not because I support him or think he is behaving in an acceptable way. It is because what she is proposing is wrong and will only damage her marriage. If she can’t trust him enough without the GPS, then she should seperate and see how things go.
It’s like going to a restaurant and ordering soup, but following the waitress around to see if anyone spits in it. If you don’t trust them to be honorable with your soup, then don’t eat there.
She needs to really figure out what she wants to do in her marriage, then either seperate and life apart or start actively working to heal her marriage.